Best time to fly Cuiabá to Brasília

Every month pooled across the years on record, so "July" means July generally rather than one particular July. Full CGB to BSB record →

Best month

October

100% on time · 11 flights

Worst month

December

82.9% on time · 141 flights

Month Flights On time Cancelled When late, by
January 193 93.2% 1.04% 93 min
February 164 89% 0% 33 min
March 204 90.6% 0.98% 31 min
April 207 88.3% 0.48% 66 min
May 215 93.5% 0.47% 59 min
June 115 95.6% 0.87% 58 min
July 226 96% 0.88% 35 min
October 11 100% 0%
November 98 93.9% 0% 51 min
December 141 82.9% 0.71% 70 min

What a seasonal pattern can and cannot tell you

Months differ for reasons that repeat — summer thunderstorms in the American interior, winter fog and de-icing in northern Europe, school holidays filling every seat and leaving no slack in the schedule. Those are real and they come back each year.

What the pattern cannot do is forecast a particular flight. A quiet month has late days and a bad month has punctual ones. Treat this as a way to choose between two dates you are indifferent about, not as a promise.